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24 Cards in this Set
- Front
- Back
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Abrasion
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The type of weathering in which rocks are worn away by friction
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Avalanche
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A sudden downward movement of a large amount of snow and ice
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Bedrock
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A layer of rock that has not been weathered
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Delta
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An area of sediment deposited at the end of the river
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Deposition
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The process by which water or wind drops sediment in a new place
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Erosion
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The moving of bits of weathered material from one place to another
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Frost weathering
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The movement of rocks and soil caused as water drops below freezing
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Glacier
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A huge sheet of ice that slowly moves downhill
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Humus
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The part of soil that consists of decayed plant and animal material
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Landslide
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A large area of land in which garbage is buried
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Landforms
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One of the various shapes of the land on the surface of the earth
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Sediment
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Small bits of weathered material
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Soil
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The loose material on the surface of the earth
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Subsoil
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The layer of soil under the topsoil made mostly of course rocks that have been weathered
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Topsoil
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The layer of soil closest to the surface; contains humus
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Volcano
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A crack in the surface of the earth through which melted rock, called lava, flows
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Weathering
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A process that breaksdown or changes rock
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Moraine
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A hill formed by a glacier.
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Volcanoes and earthquakes
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Volcanoes and earthquakres push land upward
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Soil is made of
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Soil is made of weathered rock, water, air, and humus
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Mountains and dunes
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Mountains and dunesare two types of landforms
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Landslides and avalances
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Landslides and avalances are two kinds of erosion caused by gravity
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The three sizes
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The three sizes of weathered rock are sand, silt, and clay
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Wind, water, and plants
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Wind, water, and plants can cause rocks to weather
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